05000296/LER-1980-010-03, /03L-0:on 800410,while Performing S.I. 4.2.A-3, LIS-3-56A SW1 & 2 & LIS-3-56B SW2 Failed to Operate.Caused by Dirty Contacts.Contacts Were Cleaned & Switches Checked for Proper Setpoint & Repeatability

/03L-0:on 800410,while Performing S.I. 4.2.A-3, LIS-3-56A SW1 & 2 & LIS-3-56B SW2 Failed to Operate.Caused by Dirty Contacts.Contacts Were Cleaned & Switches Checked for Proper Setpoint & Repeatability

ML18025A856
Person / Time
Site:	Browns Ferry
Issue date:	05/08/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18025A855	List: 05000296/LER-1980-010, Forwards LER 80-010/03L-0 05000296/LER-1980-010-03, /03L-0:on 800410,while Performing S.I. 4.2.A-3, LIS-3-56A SW1 & 2 & LIS-3-56B SW2 Failed to Operate.Caused by Dirty Contacts.Contacts Were Cleaned & Switches Checked for Proper Setpoint & Repeatability
References
LER-80-010-03L-03, LER-80-10-3L-3, NUDOCS 8005160369
Download: ML18025A856 (3)

LER-1980-010, /03L-0:on 800410,while Performing S.I. 4.2.A-3, LIS-3-56A SW1 & 2 & LIS-3-56B SW2 Failed to Operate.Caused by Dirty Contacts.Contacts Were Cleaned & Switches Checked for Proper Setpoint & Repeatability

Event date:
Report date:
2961980010R03 - NRC Website

text

NRC FORMI "66 U. S. NUCLEAR REGULATORY I OMMISSION (7 77)

~

0 ENSEE EVENT REPORT.

5 26036$

CONTROL BLOCK:

QI

{PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)

I 6

~o>

~AL B~RP 3

Q2 0

0

0 0

0 0

0

0 0

Qu 4

1 1

I 1 Q<~QB 7

8 9

LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T SOURCE MQB '

7 0 4>> <<QB>> <<<<QB 8

60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABI.E CONSEQUENCES ~IO

~02 During normal operation while performing S. I. 4. 2. A-3 LIS-3-56A SW.

1 and 2 and LIS-3-56B SW 2 failed to operate contrary to T.S. 3.2.A and 3.2.B.

Redundant channels

~O were operable'.

There were no significant resulting events.

There was no danger to he 1th o r safety of public.

No previous occurrences.

~OB

~OB 80 7

8 9

7 8

SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE

~

COMPONENT CODE SUBCODE SUBCODE

~CD Qii E

Qa

~D Q>u 1

N S

Y R

0 QI4

~SQIB

~Z Q>d 9

10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LERIRO EVENT YEAR REPORT NO.

CODE TYPE NO.

Q17 REPORT

~80

~

~01 0

~~

~03

~L

0 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDQ PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER Qis ~~Q>>

gJQ20

~Q 0

0 0

0

~YQ23

~NQ24

~LQ2s Y

0 1

0 Q2u 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 Cause of switch inoperability was attributed to dirty contacts.

Contacts were cleaned and switches checked for proper setpoint and repeatability.

Yarway level

~ll indicating SW., Model

4418C, Yarway instruments will be replaced by Rosemount alarm and trip units under DCR 1398.

~13 4

NA 7

8 9

FACILITY E

Q2A ~09 8

Q2u NA

~BQ>,

Bouud du<1uSu u T 4.F...

7 8

9 10 12 13 44 45 46 ACTIVITY CONTENT RELE(SED OF RFLEA'SE PXOUNT OF ACTIVITYQ LOCATIONOF RELEASE Q6 EK Q ~Q34 7

8 9

10 44 45 PERSONNEL EXPOSURES NUMBER TYPE

DESCRIPTION

7

~0000 00 QQ up~ZZ QQ us NA 7

8 9

11 12 13 PERSONNEL INJURIES I

NUMBER DESCRIPTION'Q [lla) ~00 0 gQ Nr 80 80 80 80 7

8 7

8 O

7 8

9 11 12 LOSS OF OR DAMAGE TO FACILITY TYPE

DESCRIPTION

Z Qg2 NA 9

10 P U8 L IC ITY ISSUED DFSCRIPTION~

~NQ44 9

10 NAMF AF PAF>AZ1FI1 PHONE; 80, 60 NRC USE ONLY 80 o

0 IL c3

I'enni('ee'alley Authorit~

J3Riwnh Ferry Nuclear Plan~

Fortn RF-17 BF 15.2 1/10/V9 I.ER SUPPLEMENTAL INFORMATION BFRO 296 / ~8'ug'echnical Specification Involved Reported Under Technical Specification

6. 7. 2.b(1)

Date of Occurrence 4/10/80 Time of Occurrence 1330 Unit Identification and Descri tion'of Occurrence:

During performance of S.I. 4.2.A-3 LIS-3-56A switch l and 2 and LIS-3-56B switch 2 failed to operate.

Conditions Prior to Occurrence:

Unit l 8 50%

Unit 2 8 96%

Unit 3 8 98%

Action specified in the Technical Specification Surveillance Requirements met d~

NA Apparent Cause of Occurrence:

Cause of the event

was contributed to dirty contacts.

~Ansi sis of Occnrrcncs:

There was no damage to.plant equipment.

There was no activity release, no personnel exposure or injury and no danger to health or safety of the public.

Corrective Action

Switch contacts were cleaned, then the switches checked for proper setpoint and repeatability.

FOllule Data:

NA

t:Retention:

<Period - Lifetime; Responsibility' Administrative Supervisor

• Revision